This book attempts to understand the multiple branches that fall under the discipline of ecology and how such concepts have practical applications. Ecology refers to the study of organisms, their interaction with each other and the environment. It includes topics like earth science, biology, diversity and geography. It also studies biodiversity which includes study of different species of organisms, genes and ecosystems. This text is a compilation of chapters that discuss the most vital concepts in the field of ecology. Different approaches, evaluations and methodologies and advanced studies on the subject have been included in it. Coherent flow of topics, student-friendly language and extensive use of examples make this book an invaluable source of knowledge.